Liquid dispensing apparatus

ABSTRACT

A combined closure and liquid pumping device for a container having a cap adapted to screw onto a threaded spout of the container The closure also includes a pump mechanism having a nozzle connected by a liquid conduit to an inlet within the container. The pump has inlet and outlet check valves in the conduit and a pump chamber connected to the conduit between the valves. The outlet valve is located between the pump and the outlet orifice of the nozzle inwardly or upstream from the nozzle orifice. The nozzle is adjustable on the body of the device and in one adjusted position positively holds the outlet valve closed so that the outlet valve closes off the conduit for disabling liquid pumping operation of the pump and also serves as a static seal to prevent leakage from the container via the liquid conduit. In another adjusted position of the nozzle the outlet valve is free to function as a check valve in the conduit which closes the conduit during the intake stroke of the pump and opens during the ejection stroke of the pump to pass liquid from the conduit through said orifice. The pumping device is also provided with a check valve which permits admission of air through a vent into the container above the liquid during the intake stroke of the pump but closes the vent at all other times to prevent leakage of the liquid from the container through the vent.

1 mted States Patent 11 1 3,685,739 Vanier 1451 Aug. 22, 1972 [54]LIQUID DISPENSING APPARATUS [57] AB T I V V [72] Inventor: Vance ValuerMlamleLakes A combined closure and liquid pumping device for a [73]Assignee: The AFA Corporation of Florida, container having a p adaptedto Screw Onto 1 Mi i L k Fl threaded spout of the container The closurealso includes a pump mechanism having a noule connected [22] Ffled 1970by a liquid conduit to an inlet within the container. [21 Appl. No.:61,936 The pump has inlet and outlet check valves in the conduit and apump chamber connected to the conduit between the valves. The outletvalve is located liil 3138!.11311111111111:fiifiiiffiilfllsfiii eeeweeeehe pump end he eeeee eehee ef he [58] Field 61 Search ..239/333, 349,354, 359, 525, F P upstream fmm the male F 239/526, 527 571,572, 581582, 383., zle 1s ad ustable on the body of the device and 1n one 7222/520, 341, 380 adjusted position positively holds the outlet valveclosed so that the outlet valve closes off the conduit [56]keferencesvcited for disabling liquid pumping operation of the pump andalso serves as a static seal to prevent leakage from UNITED STATESPATENTS the container via the liquid conduit. In another ad- 3,06l,202/1962 Tyler ..239/333 justed POSitiO of the male the Outlet valve isfree 3,033,428 5/l962 van Baarh "22520 x function as a check valve inthe conduit which closes 3,176,883 4/1965 Davis, Jr. ..'.222/327 x theConduit during the intake Stroke of the p p and 2,886,219 5/1959 VanBaarn ..222/520 x Opens during the ejection Stroke of the p p to p3,474,936 10/1969 liquid from the conduit through said orifice. The

McDonnell ..239/327 X Primary Examiner-M. Henson Wood, Jr. AssistantExaminer-Michael Y. Mar Attorney-Barnes, Kisselle, Raisch & Choatepumping device is also provided with a check valve which permitsadmission of air through a vent into the container above the liquidduring the intake stroke of the pump but closes the vent at all othertimes to prevent leakage of the liquid from the container through thevent.

Claims, 8 Drawing Figures /0. a a m /7 l 2 2o l4 H65 VANCE R. VARHERATTORNEYS PATENTEDMJBZZ m2 3.585739 SHEET 3 0f 4 v INYENTOR. VANCE R.VANIER ATTORNEYS LIQUID DISPENSING APPARATUS This invention relates to aliquid dispensing apparatus and more particularly to means for sealingand disabling a liquid dispensing pump of the type which mounts on acontainer to thereby provide a shippable closure for the container.

This invention relates to spray dispensing devices of the type disclosedin U.S. Pat. No. 3,061 ,202. Although such dispensers normally employinlet and outlet check valves associated with the pump mechanism whichmay be lightly spring biased or gravity biased to a seated position,such valves are not intended as static seals to prevent gravity flow ofliquid through the dispenser unit in the event that the container shouldbe inverted. Hence such dispensers normally are not capable of servingas a shippable closure; i.e., capable of sealing the container againstleakage of its contents during shipment and/or storage of the dispenserprior to purchase by the ultimate consumer. Hence a separate screw-oncap or other closure must be secured to the container if it is to beshipped full of liquid, and the dispenser included in the package as aseparate device disconnected from the container.

Where the spray dispensing device of the type referred to above isattached to the container containing the liquid to be dispensed,-eitherbefore orafter shipment, the existence of an externally or internallymanually operated element or trigger invites tampering of the device sothat, either inadvertently or maliciously, the same may be actuated soas to partially or fully pump liquid before the unit has been sold tothe customer. This has necessitated mechanical locking means for theoperating element or other additional protective packaging enclosures inorder to render such dispensers tamper-proof.

Accordingly it is an object of the present invention to provide a liquiddispensing device of the type having a self-contained pumping mechanismwhich is removably mountable on the spout of a container and whichincorporates an inexpensive leakproof and tamper-proof seal which isfactory installed to both disable the pump mechanism with respect to itsability to pump a liquid and to prevent leakage of liquid from thecontainer so that the liquid dispensing device can serve as a shippableclosure for a liquid filled container.

FIG. 2 is a front elevational view of the device of FIG. 1 with thecontainer shown in fragmentary elevation and in broken lines.

FIG. 3 is a vertical sectional view of the device on an enlarged scale.

FIG. 4 is a vertical section through the nozzle portion of the liquiddispensing device showing the outlet check valve held positively inclosed position by the nozzle in one adjusted position to therebydisable the pump.

, largedscale showing the container closure or cap with its air vent andthe check valve which admits air into the container during the intakestroke of the pump but seals the container against flow of liquidthrough said vent.

FIG. 8 is an enlarged sectional viewsimilar to FIG. 4 showing a modifiedform of outlet check valve.

Referring to the drawings it will be seen that the subject shippableclosure-dispenser of the invention is an A further object is to providea closure-dispenser of the above character wherein the seal is readilyopened by the ultimate consumer and merely opening the seal enablesoperation of the liquid pumping mechanism of the dispenser and whereinthe dispenser is readily resealable and thereby disabled for storage.

Still another object is to provide a closure-dispenser of the abovecharacter wherein the seal and other parts of the dispenser may be madeof plastic material by mass production injection molding techniques at aminimum of cost.

Other objects as well as features and advantages of the presentinvention will become apparent from the following detailed descriptiontaken in conjunction with the accompanying drawings wherein:

FIG. 1 is a side elevational view of the trigger operated liquiddispensing device mounted on a liquid container, the container beingshown in fragmentary elevation and in broken lines.

improvement upon the liquid trigger operated device of the type shown inU.S. Pat. No. 3,061,202. Referring to U.S. Pat. No. 3,061,202 sprayer 10as disclosed cannot be used as a closure for the container for shippingpurposes unless the container is empty of liquid. This is because inletcheck valve 17 is lightly biased by spring 19 to open position, andoutlet check valve 29 is also only lightly biased by spring 30 to closedposition. Hence if the container is inverted when full of liquid, anyliquid contained in dip tube 22 will run down hill past valve 17,through passage 34, chamber 32 and passage 35 to valve 29. The strayliquid can then leak around valve 29 into the nozzle passages and thenrun out of unit 10 through orifice 25. This same condition also existsin a modification of sprayer 10 wherein a metal check ball issubstituted for valve 17 and the force of gravity acting on the ballwhen sprayer 10 is upright is relied upon to lightly bias the ball toclosed position.

Consequently, the sprayer 10 of U.S. Pat. No. 3,061,202 when sold with apackaged liquid has had to be packaged separately from the container andthe container sealed by a separate closure, such as a conventional screwcap. This, of course, entails additional cost both for the extra closurecap and the additional packaging procedure involved, as well as the costinvolved in the extra bulk required to accommodate the detached orseparate sprayer 10 in the shipping carton. However, in accordance witha principal feature of the present invention, the liquid dispensing unitis inexpensively converted to a shippable closure by converting themisting or spinner element and the outlet valve into one element andarranging the nozzle with respect to the combined spinner element andoutlet check valve so that the nozzle can be adjusted to one positionwhere it positively closes the outlet valve to disable the pump and toanother position where the outlet valve is responsive to the action ofthe pump, closing on the intake stroke of the pump and opening on theliquid ejecting stroke of the pump and in addition an air vent and checkvalve therefor are provided for the container closure which admit airinto the container on the suction stroke of the pump and seals theclosure against loss of liquid from the container while the containerwith its load of liquid and the pump assembled thereto are shipped orotherwise handled as an assembly.

Referring to the drawings herewith the device comprises a body 1, atrigger 2 pivotally supported on the body by a pin or rivet 3, a hollowpiston 4 containing a rubber or flexible cup-shaped piston washer 5, apiston reaction spring 6 mounted within the cylinder bore or cavity 7formed in body 1. Piston 4 with its rubber washer acts as a two-piecepiston. One end of spring 6 is positioned over and supported on guidestem 8 in cylinder 7 and integral with body 1. The other end of spring 6seats in the rubber cup washer 5 which forms part of piston 4. The body1 is provided with a conical cavity 9 into which is pressed the upperconical end 10 of the intake stem 11, the .stem 11 thus being securelyaffixed to the body 1. The lower end of the body which forms cavity 9preferably abuts the flange 12 on intake stem 11. An intake or suctiontube 13 which has a press fit in intake stem 11 extends into containerto a point adjacent the bottom of container 15.

An internally threaded bottle cap or closure 14 is provided for securingthe liquid dispenser to the liquid container 15 having a threaded neck66 upon which the closure 14 is screwed. Stem 11 passes through acentral opening 16 in the cap and the surrounding flange portion 17 ofthe cap extends over flange 12 on the intake stem. A rubber seal 18 inthe form of a frustum of a cone surrounds and seals circumferentiallyagainst stem 11 as at 19. The circumferential flange 20 at the upper endof conical seal 18 is compressed between the flange 12 and the topsurface 48 of the outlet or neck 66 of the container 15 for the liquidbeing dispensed so as to effect a liquid tight seal between the upperend of outlet or neck 66 of container 15 and flange 12 (FIG. 7). Cap 14is provided with a small vent opening 21 which communicates with a ventopening 22 in flange 12.

During the suction stroke of the two-piece piston 4, 5 air is drawn intothe container 15 above the liquid from atmosphere through vents 21, 22and by the lower circumferential edge 19 of the rubber seal 18, asindicated in FIG. 7. A check valve is provided for permitting air to bedrawn into the container through passages 21 and 22 but checking orstopping the reverse flow of air from the container to atmosphere.Preferablythis check valve takes the form of conical seal 18 which actsas a check valve by sealing against the stem 11 permitting air to enterthe container through vents 21 and 22 and preventing air from flowingout of the container 15 through vents 21 and 22. Thus seal member 18serves the dual function of a check valve and a washer for effecting aliquid tight seal between flange 12 of intake stem 1 1 and the outlet ofneck 66 of the container 15.

Stem 11 is provided with an opening 23 adjacent the upper end of thetube 13. Orifice or opening 23 is controlled by a ball check type valve24 which permits liquid to be drawn upwardly from the container 15through tube 13 and opening 23 into cavity 9 but prevents reverse flowof liquid from cavity 9 through opening 23 into container 15. Cavity 9communicates through orifice or opening 25 with cylinder 7.

Body 1 is provided with an outlet conduit 26 which providescommunication between cylinder or pump chamber 7 and nose bushing 27which has a press fit in the hollow nose 28 of body 1. An ejectionnozzle 29 which is internally threaded has a screw fit on the externallythreaded nose 28. An orifice member 30 having an orifice 31 is pressedinto an opening 32 in the outer end of nonle 29. Orifice member 30 has acircumferential flange 33 which surrounds the outer end of nose bushing27 (FIG. 4). A rubber 0-ring 34 is provided within nozzle 29 aroundbushing 27 and between flange 33 of the orifice member 30 and the outerend of hollow nose .28. As shown in FIGS. 4 and 5, the O-ring 34 effectsa liquid tight seal between nose bushing 27 and nozzle 29 so that allthe liquid ejected by the pump will pass through orifice 31.

Within nose bushing 27 there is provided a combination check valve andspinner element 35. Combination spinner and check valve 35 takes theform of a cup or cylinder closed at its outer end by wall 37. Theoutside face of wall 37 is provided with a circular cavity 38 whichcommunicates with outlet orifice 31 and a plurality of tangential slots39 which extend from cavity 38 to the outer face of spinner element 35(FIG. 6). The outer end face 40 of spinner element is flat so that itcan effect a liquid tight seal against the inner face 44 of orificemember 30 thereby forcing all of the liquid ejected by the pump to passthrough tangential slots 39. Combined spinner and check valve 35 isprovided externally with a plurality of circumferentially spacedlongitudinal ribs 41 and is freely slidable within cylindrical nosebushing 27. Ribs 41 slide upon the internal face of nose bushing 27 andprovide passageways 42 through which liquid can pass through nosebushing 27 around the outside of valve 35. The inner end portion ofmember 35 is enlarged and thus forms a circumferential shoulder 43.Shoulder 43 has a plurality of circumferentially spaced radial slots 45which communicate with passageways 42 and the space 36 between theenlarged end of member 35 and the interior wall of bushing 27 The innerend face 46 of member 35 is flat so that it can make a liquid tight sealwith the end wall 47 of nose 28 when member 35 is pressed against wall47 by screwing nozzle 29 to the right as shown in FIG. 4. When nozzle 29is screwed to the left or open position, as shown in FIG. 5, face 46 ofmember 35 is free to withdraw from wall 47 to place passageway 26 incommunication with space 36.

Preferably as a matter of reducing the cost of this liquid dispensingdevice all of the elements referred to above except the rubber seal 18,stainless steel check valve 24, metal coil spring 6, rubber pistonmember 5 and 0-ring 34 may be made of plastic by well known moldingtechniques.

The operation of the dispensing device above described is as follows:Assume that nozzle 29 is turned outwardly so that the distance betweenthe inner face 44 of orifice member 30 and wall 47 of nose 28 is greaterthan the over-all length of combined check valve and spinner element 35so that member 35 is free to move longitudinally within nose bushing 27as shown in FIG. 5, that cavity 9, cylinder or pump chamber 7, andpassageway 26 are empty of liquid and filled only with air and that thecontainer is filled to a level above the lower end of tube 14. Undersuch conditions if trigger 2 is manually squeezed to rapidly force thetwopiece piston 4, 5 inwardly of pump chamber 7, then air compressed bythe piston will cause inlet check valve 24 to seat and close opening 23and outlet check valve and spinner element 35 to move leftward to openposition, FIG. 5, to thereby expel a quantity of pressurized air toatmosphere through nozzle orifice 31. If trigger 2 is then released,spring 6 will bias piston 4 back to the outward position thereof shownin FIG. 3, thereby creating a sub-atmospheric pressure in chamber 7.This air pumping action is repeated for several strokes of the pistonuntil the resulting evacuation of air from chamber 7, cavity 9 andpassageway 26 causes liquid from container to be drawn into pump chamber7 to thereby prime the pump with liquid. Further actuation of thetrigger to reciprocate piston 4 will then cause liquid to be pumped fromthe container 15 and dispensed in a spray or jet from orifice '31 eachtime trigger 2 is squeezed.

In FIG. 5 nozzle 29 is turned outwardly a short distance as indicated bythe end of the nozzle being aligned with the'second thread 50 on nose 28so that the distance between faces 44 and 47 is greater than the lengthof member 35. This frees member 35 for sliding action in bushing 27. Nowwhen shoulder 43 of member 35 abuts the internal shoulder 51 of nosebushing 27, the outer face 40 of member 35 is spaced from the inner face44 of orifice piece 30. In such position the liquid being ejected isfree to pass between end 40 of member 35 and face 44 and leaves theorifice 31 as a jet or solid stream.

However, if nozzle 29 is turned to the'right, FIG. 5, so that therearmost end of the nozzle is positioned over innermost thread 52 onnose 28, as appears in FIG. 3, the outer end 40 of member 35 is free tobe pressed against the inner face 44 of orifice member during theejection stroke of the pump thus requiring all of the ejected liquidflowing through passages 42 to pass through the tangential slots 39which gives the liquid a centrifugal action as it enters orifice 31 andis then ejected from orifice 31in the form of a spray or .mist. At thistime with spinner face 40 tightly abutting orifice inner face 44 (dottedline showing in FIG. 5), shoulder 43 on the member will clear internalshoulder 51 of nose bushing 27 and faces and 44 will abut in a substantial liquid tight seal to force all liquid being ejected through thetangential slots 39.

The shut-off or disabled condition of the pump is shown in FIG. 4. Atthis time nozzle 29 is turned inwardly so that check valve and spinnerelement 35 is clamped tightly between end wall 47 of nose 28 and innersurface 44 of orifice member 30. Since ejection nozzle 29 clamps face 46of member 35 tightly against face 47 to effect a liquid tight seal,liquid cannot escape from pump chamber 7 and passageway 26.

In FIG. 3 nozzle 29 is positioned so that check valve and spinnerelement 35 on each ejection stroke of the pump will cause the liquid tobe ejected from orifice 31 in the form of a spray. In FIG. 5 (full lineshowing) the nozzle 29 is positioned so that check valve and spinnerelement 35 on each ejection stroke of the pump will cause the liquid tobe ejected from orifice 31 in the form of a spray. With nozzle 29positioned as shown in FIGS. 3 and 5, assuming the pump to be primed, asspring 6 moves piston 4 on its suction stroke valve 35 will be drawn toclosed position and liquid will be drawn upwardly through tube 13 bycheck valve 24 into cavity 9 and pump chamber 7 and as the liquid isbeing withdrawn from the container through tube 13 atmospheric air willpass into the container through air orifices 21, 22 and by rubber checkvalve 18. Rubber check valve 18 will close around stem 11 immediately orat the end of the suction stroke of piston 4. Now as trigger 2 issqueezed and piston 4 moves upwardly and to the right, FIG. 3, on itspressure or ejection stroke, check valve 24 seats, closing off opening23, and the pressure of the liquid being ejected from chamber 7 throughpassageway 26 acts against member 35 moving it to the left until theouter face 40 of member 35 seats against the inner face 44 of nozzle 30,FIG. 3, in the event a spray is desired or until shoulder 43 of valve 35abuts against shoulder 51 of nose bushing 27 in the event a solid streamor jet of liquid is desired.

On the pressure or ejection stroke of piston 4 liquid is forced fromchamber 7 through tube 26 around valve 35 (valve 35 being open as abovesaid) into space 36 thence through notches 45 into passageways 42, thenthrough either the tangential slots 39 (FIG. 3) or between front face 40of the member 35 and face 44 of orifice member 30 (FIG. 5), and thencethrough orifice 31 where the liquid is ejected either in the form of aspray or a jet. Thus valve 35 acts as a pressure actuated valve closingoff passageway 26 during the suction stroke of piston 4 and opening uponthe pressure stroke of piston 4.

When it is desired to ship container 15 containing the liquid to bedispensed and with the combined closure and liquid pumping devicemounted thereon, nozzle 29 is turned so that it moves to the right untilvalve 35 is closed tightly against face 47 of nose 28 thereby closing orsealing off passageway 26 and the pump is now disabled so thatinadvertent or malicious operation of trigger 2 will not eject fluidfrom the nozzle orifice 31.

Further, liquid cannot leak out from the container through cap 14because of the liquid tight seal provided by conical rubber seal 18.This condition of valve 35 is shown in FIG. 4. Further, the containercan be turned upside down or laid on its side and no liquid will be losteither by an attempted pumping action or through the closure 14.

When it is desired to render the pump operative nozzle 29 is turned sothat nozzle 29 moves to the left on nose 28 to free valve 35 forreciprocating action so that during the suction stroke of the pump itseals against wall 47 as above described and during the pressure orejection stroke of the pump member 35 moves to the left or open positionas illustrated in FIGS. 3 and 5 and as described above.

FIG. 8 shows a modification of the combined check valve and spinnerelement, otherwise the combined closure and pumping device is identicalwith that shown and described above; The modified form of check valveand spinner element, FIG. 8, differs from that shown in FIGS. 1 to 7only in that the valve is provided with a conical nose piece 53 whichco-acts with a conical seat 54 at the terminal end of passageway 26,conical nose piece 53 is provided with a cylindrical stem 55 which has apress fit within the hollow cavity 56 of member 35. The modified valveof FIG. 8 operates exactly the same as the principal form of the valveshown in FIGS. 1 through 7 except that conical end nose piece 53 seatsagainst a conical seat 54 to close off passageway 26 whereas in theprincipal form of the combined spinner and valve member 35 the flat face46 of member 35 seats against flat face 47 of the nose piece 28 to closeH passageway 26 when the valve is in closed position.

When the pumping mechanism is secured to the neck of the container 15,as shown in FIG. 1, and the nozzle is turned to its shut off position,FIG. 4, valve member 35 is clamped between the nozzle and face 47 at theoutlet end of passageway 26 and thus effects a liquid tight sealpreventing liquid from flowing out of passageway 26. At this time theconical rubber seal provides a liquid seal between the neck of thecontainer and the closure to prevent liquid from flowing out of thecontainer except through tube 13. However, the cylinder 7 is effectivelysealed against liquid leakage by the piston washer 5. Thus, thecontainer with liquid therein and the pump assembled thereto can beshipped and handled without any loss of liquid from the container.

I claim:

1. In a device adapted for dispensing liquids from a container whereinthe device comprises a pumping mechanism adapted to be secured to acontainer containing the liquid to be dispensed, said pumping mechanismincluding a pump chamber, an inlet conduit adapted to connect the pumpchamber with the liquid in the container, an inlet check valve in theinlet conduit between the pump chamber and the container, a nozzlehaving a dispensing orifice, an outlet conduit connecting said pumpchamber with said orifice, and an outlet check valve in said outletconduit between the pump chamber and said orifice, the improvementwherein said nozzle is adjustable to a first position providingclearance for movement of said outlet check valve whereby said outletcheck valve in the liquid dispensing operation of said pumping mechanismis free to move to an open position in response to said pumpingmechanism being actuated to eject liquid through said dispensing orificeand to a closed position in response to said pumping mechanism beingactuated to draw liquid into said chamber via said inlet conduit andinlet check valve, and wherein said nozzle is adjustable to a secondposition with respect to said check valve to take up said clearance andthereby hold the outlet check valve in said closed position to maintainsaid outlet conduit closed and thereby disable the pumping mechanismfrom ejecting liquid from said orifice.

2. The combination claimed in claim 1 wherein said pumping mechanismincludes a body having a nose with a passageway therein leading fromsaid pumping mechanism and forming at least a portion of said outletconduit, said outlet check valve being mounted within said nosepassageway and movable within said passageway between said open andclosed positions thereof, said nozzle being adjustable to said secondposition wherein it positively holds said outlet valve in said closedposition to shut off communication between said orifice and said pumpchamber via said outlet conduit and adjustable to said first positionwherein said outlet check valve is free to move in response to saidpumping action of said pumping mechanism between said open and closedpositions of said outlet check valve to thereby enable said outlet checkvalve to close the outlet conduit during the suction cycle of saidpumping mechanism and to open the outlet conduit in response to theliquid ejecting action of said pumping mechanism to permit dispensing ofthe liquid through said dispensing orifice.

3. The combination claimed in claim 2 wherein said outlet check valve isslidable in said nose passageway between said open and closed positionsthereof when said nozzle is in said first adjusted position.

4. The combination set forth in claim 3 wherein said outlet check valveis in the form of a closed body and is provided with external ribs whichhave a sliding engagement with the nose passageway and providepassageways through which the liquid being dispensed flows when saidoutlet valve is in open position.

5. The combination set forth in claim 4 wherein the outer end portion ofsaid outlet check valve abuts said nozzle when said nozzle is in a thirdadjusted position between said first and second positions thereof andwhen the pumping mechanism is actuated to pressurize said liquid, saidouter end portion being provided with at least one radial slot throughwhich the pressurized liquid flows preparatory to being ejected from thenozzle orifice as a spray.

6. The combination claimed in claim 4 wherein said nozzle is threadablymounted on said nose such that when said nozzle is adjusted by screwingit to its second position the outlet check valve is clamped between thenozzle and a seat in said outlet conduit to thereby shut ofi saidconduit and disable the pumping mechanism.

7. The combination set forth in claim 1 including closure means forsecuring said pump mechanism to a container for the liquid to bedispensed, said closure means having a vent for admitting air into thecontainer and a normally closed check valve for said vent which opens toadmit air into the container in response to the pumping action of saidpumping mechanism when it withdraws liquid from said container.

8. The combination set forth in claim 7 wherein said pumping mechanismincludes an intake stem adapted to project into the neck of thecontainer and said normally closed check valve is in the form of atruncated flexible inverted cone provided with a peripheral flangeclamped between the closure means and the container outlet to provide aliquid tight seal, said truncated conical seal having an opening throughwhich the intake stem portion of said pumping mechanism projects inliquid sealing relation therewith.

9. In combination a container adapted to hold liquid to be dispensed, adevice adapted for dispensing liquids from a container wherein thedevice comprises a pumping mechanism adapted to be secured to acontainer containing the liquid to be dispensed, said pumping mechanismincluding a pump chamber, an inlet conduit adapted to connect the pumpchamber with the liquid in the container, an inlet check valve in theinlet conduit between the pump chamber and the container, a nozzlehaving a dispensing orifice, an outlet conduit connecting said pumpchamber with said orifice, and an outlet check valve in said outletconduit between the pump chamber and said orifice, said nozzle beingadjustable to a first position providing clearance for movement of saidoutlet check valve whereby said outlet check valve in the liquiddispensing operation of said pumping mechanism is free to move to anopen position in response to said pumping mechanism being actuated toeject liquid through said dispensing orifice and to a closed position inresponse to said pumping mechanism being actuated to draw liquid intosaid chamber via said inlet conduit and inlet check valve, and whereinsaid nozzle is adjustable to a second position with respect to saidcheck valve to take up said clearance and thereby hold said outlet checkvalve in said closed position and thereby disable the pumping mechanismfrom ejecting liquid from, said orifice whereby the said container withthe pumping mechanism assembled thereto-is sealed against loss of liquidthrough said pumping mechanism when the nozzle is in its second adjustedposition.

10. The combination set forth in claim 9 including closure means forsecuring said pumping mechanism to the container forthe liquid to bedispensed, said closure means having a vent for admitting air into thecontainer and a normally closed check valve for said vent which opens toadmit air into the container in response to the pumping action of saidpumping mechanism when it withdraws liquid from said container wherebythe container is also sealed against loss of liquid through said closuremeans.

11. The combination claimed in claim 2 wherein the nose passageway is aportion of said outlet conduit, the length of said outlet check valvebeing less than the distance between the outlet orifice and a first stopin said outlet conduit when the nozzle is in'its first adjusted positionand the length of said outlet valve being equal to the distance betweenthe outlet orifice and said first stop with said outlet conduit when thenozzle is adjusted to its second position.

12. The combination claimed in claim 11 wherein said outlet valve isslidable in said nose passageway and said first stop comprises a valveseat at the juncture of the nose passageway with the portion of saidoutlet conduit extending from said pump chamber against which the valveseats to close said outlet conduit when the pump is drawing liquid fromthe container when the nozzle is in its first adjusted position as wellas when the nozzle is in its second adjusted position.

13. The combination claimed in claim 12 wherein the outlet nozzle isprovided with second seat around the outlet orifice against which theouter end of the outlet valve seats when the nozzle is in its secondadjusted position.

14. The combination set forth in claim 13 wherein the nose is providedwith a second stop in its passageway and the valve is provided with astop which abuts against said second stop to thereby space the outsaidpumping me hanism as it withdraws liquid from the container to t erebymove said outlet check valve into closed position against said firstseat to close said outlet conduit and said outlet valve is responsive tothe pressurized liquid during the liquid ejection action of said pumpingmechanism to thereby move said outlet 7 check valve against said secondseat and to open said outlet conduit, and wherein said second seat andsaid nozzle have cooperative liquid whirling means adapted to produce aspray pattern in conjunction with said outlet orifice when liquid isbeing dispensed through said dispensing orifice with said nozzle in saidthird position. 16. The combination claimed in claim 15 wherein the pumpconsists of a pumping chamber and piston reciprocable therein.

17. The combination claimed in claim 16 wherein a trigger is pivoted onthe pump body and operatively connected to the pumping piston foractuating the same.

18. In a liquid pumping device having a cylinder, a reciprocable pistontherein and an inlet for said cylinder, means for connecting said inletto a source of liquid, a check valve at said inlet operable to open onthe intake stroke of said piston and to close on the discharge stroke ofsaid piston, an outlet for said cylinder, a combination spinner andcheck valve for said outlet operable to close said outlet on the intakestroke and open said outlet on the discharge stroke of said piston, anadjustable orifice member at the discharge end of said cylinderadjustable to one position whereby said outlet check valve is free toopen and close, said outlet check valve when open cooperating with saidmember to control the pattern of liquid ejected via the orifice of saidmember, said member being adjustable to a second position wherein saidorifice member holds said outlet check valve in closing relation withsaid cylinder outlet whereby said pump is inoperable to discharge liquidthrough said outlet.

19. The combination set forth in claim 18 wherein said orifice member isthreaded on the cylinder outlet whereby said orifice member can beturned to move it to said open and closed positions thereof.

20. The combination set. forth in claim 19 wherein said cylinder outlethas a cavity in which said outlet check valve reciprocates between itsopen and closed positions, said check valve being received with aclearance in said cavity, the outer end of said outlet check valvehaving a groove therein extending transversely of the end of said outletcheck valve whereby on the discharge stroke of said piston said outletcheck valve opens said outlet and liquid passes through said clearanceand groove to and through said orifice.

1. In a device adapted for dispensing liquids from a container whereinthe device comprises a pumping mechanism adapted to be secured to acontainer containing the liquid to be dispensed, said pumping mechanismincluding a pump chamber, an inlet conduit adapted to connect the pumpchamber with the liquid in the container, an inlet check valve in theinlet conduit between the pump chamber and the container, a nozzlehaving a dispensing orifice, an outlet conduit connecting said pumpchamber with said orifice, and an outlet check valve in said outletconduit between the pump chamber and said orifice, the improvementwherein said nozzle is adjustable to a first position providingclearance for movement of said outlet check valve whereby said outletcheck valve in the liquid dispensing operation of said pumping mechanismis free to move to an open position in response to said pumpingmechanism being actuated to eject liquid through said dispensing orificeand to a closed position in response to said pumping mechanism beingactuated to draw liquid into said chamber via said inlet conduit andinlet check valve, and wherein said nozzle is adjustable to a secondposition with respect to said check valve to take up said clearance andthereby hold the outlet check valve in said closed position to maintainsaid outlet conduit closed and thereby disable the pumping mechanismfrom ejecting liquid from said orifice.
 2. The combination claimed inclaim 1 wherein said pumping mechanism includes a body having a nosewith a passageway therein leading from said pumping mechanism andforming at least a portion of said outlet conduit, said outlet checkvalve being mounted within said nose passageway and movable within saidpassageway between said open and closed positions thereof, said nozzlebeing adjustable to said second position wherein it positively holdssaid outlet valve in said closed position to shut off communicationbetween said orifice and said pump chamber via said outlet conduit andadjustable to said first position wherein said outlet check valve isfree to move in response to said pumping action of said pumpingmechanism between said open and closed positions of said outlet checkvalve to thereby enable said outlet check valve to close the outletconduit during the suction cycle of said pumping mechanism and to openthe outlet conduit in response to the liquid ejecting action of saidpumping mechanism to permit dispensing of the liquid through saiddispensing orifice.
 3. The combination claimed in claim 2 wherein saidoutlet check valve is slidable in said nose passageway between said openand closed positions thereof when said nozzle is in said first adjustedposition.
 4. The combination set forth in claim 3 wherein said outletcheck valve is in the form of a closed body and is provided withexternal ribs which have a sliding engagement with the nose passagewayand provide passageways through which the liquid being dispensed flowswhen said outlet valve is in open position.
 5. The combination set forthin claim 4 wherein the outer end portion of said outlet check valveabuts said nozzle when said nozzle is in a third adjusted positionbetween said first and second positions thereof and when the pumpingmechanism is actuated to pressurize said liquid, said outer end portionbeing provided with at least one radial slot through which thepressurized liquid flows preparatory to being ejected from the nozzleorifice as a spray.
 6. The combination claimed in claim 4 wherein saidnozzle is threadably mounted on said nose such that when said nozzle isadjusted by screwing it to its second position the outlet check valve isclamped between the nozzle and a seat in said outlet conduit to therebyshut off said conduit and disable the pumping mechanism.
 7. Thecombination set forth in claim 1 including closure means for securingsaid pump mechanism to a container for the liquid to be dispensed, saidclosure means having a vent for admitting air into the container and anormally closed check valve for said vent which opens to admit air intothe container in response to the pumping action of said pumpingmechanism when it withdraws liquid from said container.
 8. Thecombination set forth in claim 7 wherein said pumping mechanism includesan intake stem adapted to project into the neck of the container andsaid normally closed check valve is in the form of a truncated flexibleinverted cone provided with a peripheral flange clamped between theclosure means and the container outlet to provide a liquid tight seal,said truncated conical seal having an opening through which the intakestem portion of said pumping mechanism projects in liquid sealingrelation therewith.
 9. In combination a container adapted to hold liquidto be dispensed, a device adapted for dispensing liquids from acontainer wherein the device comprises a pumping mechanism adapted to besecured to a container containing the liquid to be dispensed, saidpumping mechanism including a pump chamber, an inlet conduit adapted toconnect the pump chamber with the liquid in the container, an inletcheck valve in the inlet conduit between the pump chamber and thecontainer, a nozzle having a dispensing orifice, an outlet conduitconnecting said pump chamber with said orifice, and an outlet checkvalve in said outlet conduit between the pump chamber and said orifice,said nozzle being adjustable to a first position providing clearance formovement of said outlet check valve whereby said outlet check valve inthe liquid dispensing operation of said pumping mechanism is free tomove to an open position in response to said pumping mechanism beingactuated to eject liquid through said dispensing orifice and to a closedposition in response to said pumping mechanism being actuated to drawliquid into said chamber via said inlet conduit and inlet check valve,and wherein said nozzle is adjustable to a second position with respectto said check valve to take up said clearance and thereby hold saidoutlet check valve in said closed position and thereby disable thepumping mechanism from ejecting liquid from said orifice whereby thesaid container with the pumping mechanism assembled thereto is sealedagainst loss of liquid through said pumping mechanism when the nozzle isin its second adjusted position.
 10. The combination set forth in claim9 including closure means for securing said pumping mechanism to thecontainer for the liquid to be dispensed, said closure means having avent for admitting air into the container and a normally closed checkvalve for said vent which opens to admit air into the container inresponse to the pumping action of said pumping mechanism when itwithdraws liquid from said container whereby the container is alsosealed against loss of liquid through said closure means.
 11. Thecombination claimed in claim 2 wherein the nose passageway is a portionof said outlet conduit, the length of said outlet check valve being lessthan the distance between the outlet orifice and a first stop in saidoutlet conduit when the nozzle is in its first adjusted position and thelength of said outlet valve being equal to the distance between theoutlet orifice and said first stop with said outlet conduit when thenozzle is adjusted to its second position.
 12. The combination claimedin claim 11 wherein said outlet valve is slidable in said nosepassageway and said first stop comprises a valve seat at the juncture ofthe nose passageway with the portion of said outlet conduit extendingfrom said pump chamber against which the valve seats to close saidoutlet conduit when the pump is drawing liquid from the container whenthe nozzle is in its first adjusted position as well as when the nozzleis in its second adjusted position.
 13. The combination claimed in claim12 wherein the outlet nozzle is provided with second seat around theoutlet orifice against which the outer end of the outlet valve seatswhen the nozzle is in its second adjusted position.
 14. The combinationset forth in claim 13 wherein the nose is provided with a second stop inits passageway and the valve is provided with a stop which abuts againstsaid second stop to thereby space the outlet end of the valve from saidsecond valve seat when the nozzle is in its first adjusted position. 15.The combinatioN set forth in claim 13 wherein in a third position ofsaid nozzle between said first and second positions thereof said outletcheck valve is responsive to the subatmospheric pressure created by saidpumping mechanism as it withdraws liquid from the container to therebymove said outlet check valve into closed position against said firstseat to close said outlet conduit and said outlet valve is responsive tothe pressurized liquid during the liquid ejection action of said pumpingmechanism to thereby move said outlet check valve against said secondseat and to open said outlet conduit, and wherein said second seat andsaid nozzle have cooperative liquid whirling means adapted to produce aspray pattern in conjunction with said outlet orifice when liquid isbeing dispensed through said dispensing orifice with said nozzle in saidthird position.
 16. The combination claimed in claim 15 wherein the pumpconsists of a pumping chamber and piston reciprocable therein.
 17. Thecombination claimed in claim 16 wherein a trigger is pivoted on the pumpbody and operatively connected to the pumping piston for actuating thesame.
 18. In a liquid pumping device having a cylinder, a reciprocablepiston therein and an inlet for said cylinder, means for connecting saidinlet to a source of liquid, a check valve at said inlet operable toopen on the intake stroke of said piston and to close on the dischargestroke of said piston, an outlet for said cylinder, a combinationspinner and check valve for said outlet operable to close said outlet onthe intake stroke and open said outlet on the discharge stroke of saidpiston, an adjustable orifice member at the discharge end of saidcylinder adjustable to one position whereby said outlet check valve isfree to open and close, said outlet check valve when open cooperatingwith said member to control the pattern of liquid ejected via theorifice of said member, said member being adjustable to a secondposition wherein said orifice member holds said outlet check valve inclosing relation with said cylinder outlet whereby said pump isinoperable to discharge liquid through said outlet.
 19. The combinationset forth in claim 18 wherein said orifice member is threaded on thecylinder outlet whereby said orifice member can be turned to move it tosaid open and closed positions thereof.
 20. The combination set forth inclaim 19 wherein said cylinder outlet has a cavity in which said outletcheck valve reciprocates between its open and closed positions, saidcheck valve being received with a clearance in said cavity, the outerend of said outlet check valve having a groove therein extendingtransversely of the end of said outlet check valve whereby on thedischarge stroke of said piston said outlet check valve opens saidoutlet and liquid passes through said clearance and groove to andthrough said orifice.